Vladimir Zapolskiy eaa5cd9263 fs: sysfs: don't pass count == 0 to bin file readers ...

If count == 0 bytes are requested by a reader, sysfs_kf_bin_read()
deliberately returns 0 without passing a potentially harmful value to
some externally defined underlying battr->read() function.

However in case of (pos == size && count) the next clause always sets
count to 0 and this value is handed over to battr->read().

The change intends to make obsolete (and remove later) a redundant
sanity check in battr->read(), if it is present, or add more
protection to struct bin_attribute users, who does not care about
input arguments.

Signed-off-by: Vladimir Zapolskiy <[email protected]>
Acked-by: Tejun Heo <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

2015-06-01 10:17:17 +09:00

..

dir.c

…

file.c

…

group.c

…

Kconfig

…

Makefile

…

mount.c

…

symlink.c

…

sysfs.h

…